Texas Instruments PT3106C, PT3104A, PT3104C, PT3105A, PT3105C Datasheet

For assistance or to order, call [phone]				Application Notes
				Mechanical Outline
P T 3 1 0 0 S e r i e s	2 4 V		Product Selector Guide
		15 WATT 24V TO 5V/12V/15V			Revised 5/15/98
		ISOLATED DC-DC CONVERTER

•Power Density 15 Watts/in3

•Wide Input Voltage Range 18V to 40V

•81% Efficiency

•500 VDC Isolation

•Small Footprint

•No External Components Required

Power Trends’ PT3104A (5V),

PT3105A (12V) and PT3106A (15V)

Isolated DC-DC Converters advance the state-of-the-art for board-mounted converters by employing high switching frequencies greater than 650 KHz and planar magnetics and surface-mount construction. They feature the industry’s smallest footprint, a power density of 15 Watts/in3, and operate

at 80% efficiency. They are designed for Telecom, Industrial, Computer, Medical, and other distributed power applications requiring input-to-output isolation.

Standard Application

On/Off

1

+Vin	3	5	+Vout
-Vin	2	PT3100	-Vout
		4

Specifications

Characteristics					PT3100 SERIES
(Ta=25°C unless noted)	Symbols	Conditions			Min	Typ	Max	Units
Output Current	Io	Over Vin range,	Vo = 5V		0	—	3.0	A
			Vo = 12V		0	—	1.25	A
			Vo = 15V		0	—	1.0	A
Current Limit	Icl	Vin = 18V,	Vo = 5V		—	4.0	—	A
			Vo = 12V		—	1.75	—	A
			Vo = 15V		—	1.4	—	A
On/Off Standby Current	Iin standby	Vin = 24V, Pin 1 = -Vin			—	7	10	mA
Short Circuit Current	Isc	Vin = 24V,	Vo = 5V		—	6.25	—	A
			Vo = 12V		—	2.5	—	A
			Vo = 15V		—	2.0	—	A
Inrush Current	Iir	Vin = 24V @ max Io			—	1.0	2.0	A
	tir	On start-up			—	1.0	5.0	mSec
Input Voltage Range	Vin	Io = 0.1 to max Io			18.0	24.0	40.0	V
Output Voltage Tolerance	Vo	Over Vin Range			—	±1.0	±2.0	%Vo
		TA= -20°C to +70°C
Ripple Rejection	RR	Over Vin range @ 120 Hz			—	60	—	dB
Line Regulation	Regline	Over Vin range @ max Io			—	±0.2	±1.0	%Vo
Load Regulation	Regload	10% to 100% of Io max			—	±0.4	±1.0	%Vo
Vo Ripple/Noise	Vn	Vin=24V, Io=3.0A,	Vo=5V		—	75	100	mVpp
		Vin=24V, Io=1.25A, Vo=12V			—	75	150	mVpp
		Vin=24V, Io=1.25A, Vo=15V			—	100	200	mVpp
Transient Response	ttr	50% load change			—	125	200	µSec
		Vo over/undershoot			—	3.0	5.0	%Vo
Efficiency	η	Vin=24V, Io=3.0A, Vo=5V			—	80	—	%
		Vin=24V, Io=1.25A, Vo=12V			—	80	—	%
		Vin=24V, Io=1A, Vo=15V			—	81	—	%
Switching Frequency	ƒo	Over Vin and Io,	Vo=5V		800	850	900	kHz
			Vo=12V/15V		600	650	700	kHz
Recommended Operating	Ta	Vin = 24V @ max Io			-20	—	+70*	°C
Temperature Range		Free air convection, (40-60LFM)
Thermal Resistance	θja	Free Air Convection, (40-60LFM)			—	14	—	°C/W
Case Temperature	Tc	@ Thermal shutdown			—	—	100	°C
Storage Temperature	Ts				-40	—	110	°C
Mechanical Shock	—	Per Mil-STD-202F, Method 213B,			—	50	—	G’s
		6mS, Half-sine, mounted to a PCB
Mechanical Vibration	—	Per Mil-STD-202F, Method 204D,			—	10	—	G’s
		10-500Hz, Soldered in a PCB
Weight	—	—			—	28	—	grams
Isolation	—	—			500	—	—	V
Capacitance	—	—			—	1100	—	pF
Resistance	—	—			10	—	—	MΩ
Flammability	—	Materials meet UL 94V-0
Remote On/Off	On	Open or 2.5 to 7.0 VDC above -Vin
	Off	Short or 0 to 0.8 VDC above -Vin

* See Thermal Derating Curves

Pin-Out Information

Pin Function

1Remote ON/OFF

2-Vin

3+Vin

4-Vout

5+Vout

6Do not connect

Ordering Information

Through-Hole

PT3104A = 5 Volts

PT3105A = 12 Volts

PT3106A = 15 Volts

Surface Mount

PT3104C = 5 Volts

PT3105C = 12 Volts

PT3106C = 15 Volts

(For dimensions and PC board layout, see Package Style 700.)

62	Power Trends, Inc. 27715 Diehl Road, Warrenville, IL 60555	[phone] Fax: [phone] http://www.powertrends.com